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3Com 5108M-TP manual Viii ONline Ethernet 10BASE-T Module User’s Guide

Models: 5108M-TP

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Troubleshooting Specifications Install Indicators Connecting Twisted Pair Cables Accessing the 3Com MIB Twisted Pair Connectors Precautionary Procedures Channel Select Switch Settings How to

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viii ONline Ethernet 10BASE-T Module User’s Guide

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3Com 5108M-TP manual Viii ONline Ethernet 10BASE-T Module User’s Guide

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Contents

ONline Ethernet 10BASE-T Module User’s Guide Ii ONline Ethernet 10BASE-T Module User’s Guide ONline Ethernet 10BASE-T Module User’s Guide Iv ONline Ethernet 10BASE-T Module User’s Guide Contents Installing and Operating the Module Figures Viii ONline Ethernet 10BASE-T Module User’s Guide Tables Page How to Use This Guide Audience Structure of This Guide Usr/snm/agents Document ConventionsConvention Indicates Example Related Documents 3Com Documents Reference DocumentsPage Introduction ONline Ethernet 10BASE-T Module Indicators BASE-T Module Faceplate and ONline System Concentrator LED Name Color State Indicates Dip SwitchesInterpretation of the 10BASE-T Module LEDs Dip Switch SW1 Port Status Dip Switch SW3 Crossover Mode, Channel Select, Squelch Dip Switch SW1 Settings and Interpretations Dip Switch SW3 Settings for Switches 1 Switch Function Factory Switch Setting Default OffCrossover Mode Switch Squelch Mode Switch Channel Select Switch Settings Dip Switch SW3 Settings and Interpretations for Switches 2 Switch Channel Selection Enable Related FeaturesDip Switch SW6 Settings and Interpretations LED State Channel Configuration Channel Check CodesPage Designing and ExpandingtheNetwork Understanding the General Rules Basic Network Rules Seven Basic Network Rules Rule Definition Recommendations/Notes Certain LAN devices Seven Basic Network Rules LAN Product Equivalent Distance meters LAN EquivalenceLAN Product Equivalent Distances Fiber Backbone, Twisted Pair To-The-Desk Fiber Backbone, Twisted Pair To-The-Desk Example Sample Configuration Distance Calculation Shielded Twisted Pair High Squelch Low Squelch IBM Type Maximum Link Distance on Twisted PairUnshielded Twisted Pair High Squelch Low Squelch Twisted Pair Backbone, Twisted Pair To-The-Desk Unshielded Twisted Pair Network Redundant Twisted Pair Configuration Redundant LinksPage Patch Panels Installing and Operating the Module Precautionary Procedures Unpacking Procedures Installation Procedures Installing a 10BASE-T Module BASE-T Module Cable Connection Troubleshooting Troubleshooting Troubleshooting With the Status LEDs Troubleshooting With the Port Status LEDs Troubleshooting With the Port Status LEDs Troubleshooting With the Port Status LEDs Troubleshooting With the Activity LEDs Troubleshooting With the Port Activity LEDsPossible Problem Troubleshooting State Solutions LED Name Technical Assistance ONline Ethernet 10BASE-T Module Specifications Electrical Specifications General Specifications Environmental SpecificationsMechanical Specifications Twisted Pair Connectors and Cables Twisted Pair Connectors Figure A-1. RJ45 Connector Pin-outs Twisted Pair Cables Connecting Twisted Pair Cables Page Technical Support On-line Technical Support World Wide Web Site Support from Your Network SupplierEmail Technical Support Support from 3Com Accessing the 3Com MIB Returning Products for Repair 3Com Technical Publications Page Index MIB, B-4

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